相当于OpenSSL的PasswordDeriveBytes [英] Equivalent to PasswordDeriveBytes in openssl

问题描述

我有如下C＃代码：结果

I have C# code as below:

        private static string password = "Password";
        private static string salt = "SALT";
        private static string hashAlgorithm = "SHA1";
        private static int iterations = 2;

        var saltValueBytes = Encoding.UTF8.GetBytes(salt);
        var passwordKey = new PasswordDeriveBytes(password, saltValueBytes, hashAlgorithm, iterations)
...

我需要实现在Mac上一样，我才知道，Opnessl实现相关方法（即libcrypto）。搜索结果什么是Opnessl上面的代码等效的方法？

I need to implement the same in Mac, I came to know that Opnessl implements related methods(i.e. libcrypto).

What is the equivalent method in Opnessl to above code?

推荐答案

这显示了如何与OpenSSL的，根据文档这是由所使用的算法实现PBKDF1 。PasswordDeriveBytes

This shows how to implement PBKDF1 with OpenSSL, which according to the documentation is the algorithm used by PasswordDeriveBytes.

#include <string.h>
#include <stdlib.h>
#include <openssl/sha.h>

void pbkdf1(const char *password, const char *salt, long iter, unsigned char dk[SHA_DIGEST_LENGTH])
{
    size_t pwlen = strlen(password);
    size_t dlen = pwlen + 8;
    unsigned char *buf;

    if (dlen > SHA_DIGEST_LENGTH)
        buf = malloc(dlen);
    else
        buf = malloc(SHA_DIGEST_LENGTH);

    memcpy(buf, password, pwlen);
    strncpy((char *)buf + pwlen, salt, 8);

    while (iter-- > 0)
    {
        SHA1(buf, dlen, buf);
        dlen = SHA_DIGEST_LENGTH;
    }

    memcpy(dk, buf, SHA_DIGEST_LENGTH);
    free(buf);
}

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